A:人类中患红绿色盲的女性多于男性
B:人类基因组测序是测定人体细胞中所有DNA碱基序列
C:产前诊断能有效地检测出胎儿是否患有遗传病
D:不携带致病基因就不会患遗传病
一共有6节,每节有20个座位,来了115名乘客,座位够吗?
That is not____kite. That kite is very small,but____is very big. (I)
—Could you tell ______it is from your home to your school?—It's about fifteen minutes’ ride.